Portable bluetooth-enabled scrolling LED matrix display

An open-source cascadable 8×8 LED matrix module using Arduino and MAX7219 from Embedded Lab: Easy Matrix is a cascadable 8×8 LED matrix module with the MAX7219 chip on board, which allows to control the display with only 3 I/O pins from microcontroller. Multiple Easy Matrix modules can be easily cascaded to make a bigger-size display through […]

Light Appliance – Remote controlled 32×32 RGB LED Matrix

IR remote controlled light appliance application for the 32×32 RGB LED Matrix by Craig Lindley, that is available at Github: My latest creation, the Light Appliance. This device displays various graphical routines (plasmas, fractals, etc.), animated GIFs, displays time, date and temperature, can be an open or closed sign for a business and a mood […]

SquareWear Mini chainable color LED matrix and animation design tool

Ray Wang writes about his recently completed project, the SquareWear Mini with All-New Chainable Color LED Matrix, and an Interactive Animation Design Tool. The goal is to make standalone programmable color display gadgets. The LED matrix is chainable and can be seamlessly extended in both X and Y directions. The SquareWear Mini is essentially an […]

Old display reverse engineered to work with a Raspberry Pi

Old Display Reverse Engineered to work with a Raspberry Pi: Dimitri, Frank, Kevin and Robin from Eectronique have sent in some details of a project that they have been working on. They had an old early 90′s LED matrix sign and wanted to make it work with a Raspberry Pi. The circuit layout is what […]

Minimatrix: A small and simple self-powered LED matrix

Nickjohnson posted his minimatrix project in the forum. It’s AVR powered 8×8 LED matrix, with an IR sensor for communication. It has just 8 parts in its BoM: A one-color 3cm LED matrix, an ATTiny2313/4313 to power and drive it, an 8-way resistor network, a battery holder, and two decoupling capacitors. Finally, it has a […]

Tuitwall displays Tweets on LED matrix

tuitwall is a project that will allow you to show Tweets in a LED matrix. It’s based on an Arduino, an ethernet shield, a LED matrix that has its controller, a Holtek HT1632C and a PHP backend that interfaces with Twitter. Its designer Santiago Reig explains: “The webpage, written in PHP, allows a user to […]

8×16 ping-pong ball LED matrix display

Exapod built a 8×16 ping-pong ball LED matrix display. The ping-pong balls are used as diffusers for green LEDs. Two MAX7219 8bit serial LED drivers control the lights. A PIC18F2553 drives the MAX chips with text received over a Bluetooth module. I finally finished my 8×16 ping pong ball matrix display, soldering all the boards, […]

7400 competition entry: Bad driver feedback display

Gagandeep built a “bad driver” feedback display. It’s a huge 40X16 LED matrix spanning ~80cm in width, and it’s designed to be placed on the rear windshield of a car. The spacing of 2cm between LEDs is enough to ensure that the driver doesn’t have an obstructed rear view. Using 2 74HC595 8bit serial in […]

Glass Block LED Matrix, controlled outdoors via tablet

Here is a video from Hive 13 that shows how an Android tablet is used to control a glass block LED matrix via a wireless connection. After installing a LED matrix behind a glass block wall in their bathroom, hackers at Hive 13 are figuring out a way to control them. After some initial struggles […]

7400 competition entry: Lights out game

Bertho entered his Lights out game into the Open 7400 Logic Competition. After working out the math behind lights out, Bertho decided to make his own using only logic chips. The object of the game is to turn the lights off by using a + shaped mask.The board automatically generates random patterns over a 5×5 […]